CN106191460A - A kind of without cyanogen extractant and process for extracting gold - Google Patents
A kind of without cyanogen extractant and process for extracting gold Download PDFInfo
- Publication number
- CN106191460A CN106191460A CN201610819616.0A CN201610819616A CN106191460A CN 106191460 A CN106191460 A CN 106191460A CN 201610819616 A CN201610819616 A CN 201610819616A CN 106191460 A CN106191460 A CN 106191460A
- Authority
- CN
- China
- Prior art keywords
- gold
- extractant
- cyanogen
- extracting gold
- extracting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a kind of without cyanogen extractant and process for extracting gold, wherein: described extractant without cyanogen comprises the aminoacid that mass fraction is 0.5% 2%, and mass fraction is the alkali of 0.2% 2%, and solvent is water.The process for extracting gold employing aminoacid avirulent to environment of the present invention proposes gold agent and carries out the leaching of gold, and environment-protecting asepsis, extraction time are short, leaching rate is high, waste water can discharge through simple process.The extractant without cyanogen of the present invention and process for extracting gold are not only the highest (more than 90% to the leaching rate of easily leaching gold mine, can reach 95%), for traditional Refractory Au-ores, the most pretreated Ore containing pyrite mispickel, leaching rate the highest (more than 85%), and it is less than 30% without the leaching rate of such Ore tradition cyanidation technology of pretreatment, therefore the present invention is greatly improved the leaching rate of Refractory Au-ores.
Description
Technical field
The invention belongs to field of hydrometallurgy, design is a kind of without cyanogen extractant and process for extracting gold.
Background technology
Extraction of gold by cyanidation technique is the main way carrying gold from Ore or concentrate.Since New Zealand Ke Luen ore deposit in 1889
Having built up the cyanidation gold-extracted factory of First in the world, extraction of gold by cyanidation has the history of more than 100 year so far, and extraction of gold by cyanidation has back
The features such as yield height, Ore wide adaptability.But, due to the hypertoxic characteristic of cyanide so that the production of cyanide, transport, deposit
The refuse storing up, use and containing cyanide all produces grave danger to environmental and human health impacts.Its dump leaching gold-extracting is to surface water, underground
Water and soil all constitute grave danger.Current people are to environmental conservation pay attention to day by day, and therefore the use of cyanide will increasingly be subject to
To limiting.
Additionally cyanide carries golden due to refractory mineral, as the lowest, generally in the Ore leaching rate containing pyrite and mispickel
Less than 30%, it is therefore desirable to such Ore to be carried out the pretreatment of complexity, increase extraction of gold process cost and operation easier.
CN203513764U is referred to a kind of gold using thiourea and leaches blood circulation, use leaching system,
But the leaching rate of not mentioned use thiourea gold extraction, only publicity one puies forward gold blood circulation in patent.Public affairs in CN104911371A
Show that a kind of low toxicity proposes gold agent, comprised sodium hexameta phosphate 12-12.4 part, acid sodium 7-7.4 part, sodium ferrocyanide 9.4-9.8 part, sulfur
Change sodium 10.3-10.7 part, sulfur 13.3-13.7 part, sodium bromide 10.4-10.8 part, sodium chloride 6.3-6.7 part, manganese dioxide
8.2-8.6 part, carbamide 11.8-12.2 part, calcined soda for industry 9.3-9.7 part.The gold agent that carries of this patent proposition still contains Sodium cyanate (NaOCN)
And the Cyanogran. of complexation, still there is toxicity.CN1814831A discloses a kind of wet method containing the refractory gold ore such as arsenic, antimony
Pretreatment and bridge without platform method.Its bridge without platform need nonetheless remain for acid chloride oxidant and carries out pretreatment, and it carries without cyanogen
Gold uses chlorine to extract gold from as oxide isolation.
Therefore, how to provide a kind of without cyanogen extractant and process for extracting gold, with cleaning, high efficiency extraction gold, become this
The important technological problems that skilled person is urgently to be resolved hurrily.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide one and carries without cyanogen extractant and gold
Access method, for solving the deficiency of tradition cyanidation technology, as polluted environment, severe toxicity, the most preprocessed leaching efficiency of refractory mineral
The problem such as low.
For achieving the above object and other relevant purposes, the present invention provides a kind of and is used for extracting gold from without cyanogen extractant, its
In: described extractant without cyanogen comprises the aminoacid that mass fraction is 0.5%-2%, and mass fraction is the alkali of 0.2%-2%, solvent
For water.
Alternatively, described extractant without cyanogen comprises the aminoacid that mass fraction is 0.5%-1.5%, and pH value is 9-13.
Alternatively, described extractant without cyanogen comprises the aminoacid that mass fraction is 0.6%-1%, and pH value is 10-12.
Alternatively, during described aminoacid includes glycine, alanine, aspartic acid, phenylalanine, leucine, histidine
One or more.
Alternatively, one or more during described alkali includes caustic soda, quick lime, Calx.
The present invention also provides for a kind of process for extracting gold, and described process for extracting gold is: utilized by gold mine above-mentioned any one
Extractant without cyanogen described in Xiang carries out the leaching of gold.
Alternatively, described gold mine is to be broken, by Gold Ore, the breeze that powder obtains.
Alternatively, the mean diameter of described breeze is 0.1-500 μm.
Alternatively, described breeze and described extractant without cyanogen are mixed to get mixed liquor and carry out the leaching of gold, described breeze
Mass fraction be 1-50%.
Alternatively, the mass fraction of described breeze is 1-30%.
Alternatively, the temperature of described mixed liquor is 25-80 DEG C, and PH maintains 10-12, and the response time is 8-72h.
Alternatively, the temperature of described mixed liquor is 40-70 DEG C, and the response time is 8-24h.
Alternatively, described breeze, described extractant without cyanogen and oxidant are mixed to get mixed liquor and carry out the leaching of gold.
Alternatively, one or more during described oxidant includes air, ozone, hydrogen peroxide.
Alternatively, by micro-nano bubble generator using as oxidant air, ozone or the gaseous mixture of the two with
Micro-nano bubble form is mixed into described mixed liquor.
Alternatively, a diameter of 10nm-10 μm of described micro-nano bubble.
Alternatively, described micro-nano bubble generator is to produce micro-nano by gas-liquid mixing pump or pressure air-dissolving mode
Bubble.
Alternatively, activated carbon or the polyacrylonitrile nanofiber film ADSORPTION OF GOLD ion of amidoxim are used.
Alternatively, the gold of the polyacrylonitrile nanofiber film absorption of activated carbon or amidoxim described in aminoacid desorbing is used
Ion.
Alternatively, during described aminoacid includes glycine, alanine, aspartic acid, phenylalanine, leucine, histidine
One or more.
As it has been described above, the extractant without cyanogen of the present invention and process for extracting gold, have the advantages that
(1) present invention use aminoacid avirulent to environment carry gold agent carry out gold leaching, reusable edible, environmental protection without
Poison, extraction time is short, leaching rate is high, waste water can discharge through simple process.
(2) extractant without cyanogen of the present invention is not only to the easy leaching rate the highest (more than 90%, can reach 95%) soaking gold mine,
For traditional Refractory Au-ores, the most pretreated Ore containing pyrite mispickel, leaching rate is the highest (to be more than
85%), and being less than 30% without the leaching rate of such Ore tradition cyanidation technology of pretreatment, therefore the present invention can carry significantly
The leaching rate of high Refractory Au-ores.
(3) process for extracting gold of the present invention uses micro-nano bubble to carry out gold extraction as oxidant source, can swash
Send out and produce substantial amounts of hydroxyl radical free radical, and hydroxyl radical free radical has strong oxidizing property, is greatly improved the leaching rate of breeze.And by
Minimum in its bubble, considerably increase the mass-transfer efficiency of reaction.
(4) process for extracting gold of the present invention also uses modified PAN adsorbed film ADSORPTION OF GOLD ion, and adsorption capacity is up to
120mg/g, far above the adsorption capacity of existing process activity charcoal.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of a kind of gold extraction element that the process for extracting gold of the present invention is used.
Fig. 2 is shown as the process for extracting gold of the present invention process chart when using gold extraction element shown in Fig. 1.
Element numbers explanation
1 dosing tank
2 dosing pumps
3 reactive tanks
4 centrifugal pumps
5 ceramic membrane separation systems
6 micro-nano bubble generators
7 gold medal adsorption systems
8 pH meters
9 charge doors
10 air inlets
S1～S3 step
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also be by the most different concrete realities
The mode of executing is carried out or applies, the every details in this specification can also based on different viewpoints and application, without departing from
Various modification or change is carried out under the spirit of the present invention.
Refer to Fig. 1 and Fig. 2.It should be noted that the diagram provided in the present embodiment illustrates this most in a schematic way
The basic conception of invention, the most graphic in package count time only display with relevant assembly in the present invention rather than is implemented according to reality
Mesh, shape and size are drawn, and during its actual enforcement, the kenel of each assembly, quantity and ratio can be a kind of random change, and its
Assembly layout kenel is likely to increasingly complex.
Embodiment 1
A kind of without cyanogen extractant, it is used for extracting gold from, wherein: it is 0.5%-that described extractant without cyanogen comprises mass fraction
The aminoacid of 2%, mass fraction is the alkali of 0.2%-2%, and solvent is water.Described aminoacid includes glycine, alanine, Radix Asparagi
One or more in propylhomoserin, phenylalanine, leucine, histidine.Described alkali includes in caustic soda, quick lime, Calx
One or more.
Embodiment 2
A kind of without cyanogen extractant, it is used for extracting gold from, wherein: it is 0.5%-that described extractant without cyanogen comprises mass fraction
The aminoacid of 1.5%, mass fraction is the alkali of 0.2%-2%, and solvent is water.The pH value of described extractant without cyanogen is 9-13.Institute
State aminoacid and include one or more in glycine, alanine, aspartic acid, phenylalanine, leucine, histidine.Described
Alkali includes one or more in caustic soda, quick lime, Calx.
Embodiment 3
A kind of without cyanogen extractant, it is used for extracting gold from, wherein: it is 0.6%-that described extractant without cyanogen comprises mass fraction
The aminoacid of 1%, mass fraction is the alkali of 0.2%-2%, and solvent is water.The pH value of described extractant without cyanogen is 10-12.Described
Aminoacid includes one or more in glycine, alanine, aspartic acid, phenylalanine, leucine, histidine.Described alkali
Including one or more in caustic soda, quick lime, Calx.
Embodiment 4
A kind of process for extracting gold, described process for extracting gold is: utilized by gold mine in embodiment 1-3 described in any one
Extractant without cyanogen carry out gold leaching.
Concrete, described gold mine is to be broken, by Gold Ore, the breeze that powder obtains.The mean diameter of described breeze is preferably 0.1-
500μm。
Concrete, described breeze and described extractant without cyanogen are mixed to get mixed liquor and carry out the leaching of gold, described breeze
Mass fraction be 1-50%, preferably 1-30%.
As example, the temperature of described mixed liquor is 25-80 DEG C, preferably 40-70 DEG C；PH value preferably maintains 10-
12；Response time is 8-72h, preferably 8-24h.
Further, described breeze, described extractant without cyanogen and oxidant can be mixed to get mixed liquor and carry out the leaching of gold
Go out.Wherein oxidant can improve reaction rate.
As example, described oxidant includes one or more in air, ozone, hydrogen peroxide.
For gaseous oxidant, can by micro-nano bubble generator using as the air of oxidant, ozone or the two
Gaseous mixture be mixed into described mixed liquor with micro-nano bubble form.Wherein, the diameter of described micro-nano bubble is preferably 10nm-10
μm.Described micro-nano bubble generator is to produce micro-nano bubble by gas-liquid mixing pump or pressure air-dissolving mode.
For the hydrogen peroxide of liquid, reactive tank can be directly added into.
Concrete, the polyacrylonitrile nanofiber film ADSORPTION OF GOLD ion of activated carbon or amidoxim can be used, and use ammonia
The gold ion of the polyacrylonitrile nanofiber film absorption of described activated carbon or amidoxim is inhaled in base acidolysis.Described aminoacid includes sweet
One or more in propylhomoserin, alanine, aspartic acid, phenylalanine, leucine, histidine.
The process for extracting gold of the present invention uses micro-nano bubble to carry out gold extraction as oxidant source, can excite product
Raw substantial amounts of hydroxyl radical free radical, and hydroxyl radical free radical has strong oxidizing property, is greatly improved the leaching rate of breeze.And due to it
Bubble is minimum, considerably increases the mass-transfer efficiency of reaction.Using modified PAN adsorbed film ADSORPTION OF GOLD ion, adsorption capacity is up to
120mg/g, far above the adsorption capacity of existing process activity charcoal.
Embodiment 3
Referring to Fig. 1, the structure being shown as a kind of gold extraction element that the process for extracting gold of the present invention is used is shown
It is intended to, including medicine system, reactive tank 3, solid-liquid separation system, micro-nano bubble generator 6 and gold adsorption system 7.
Concrete, described reactive tank 3 is provided with pH meter 8 and charge door 9, and described charge door 9 is for adding in described reactive tank 3
Entering breeze, described pH meter 8 is for measuring the pH value of mixed liquor in reactive tank 3.
Concrete, described medicine system is connected to described reactive tank 3, for adding gold extractant to described reactive tank 3.
As example, described medicine system includes dosing tank 1 and dosing pump 2；Described dosing pump 2 is connected to described dosing tank
Between 1 and reactive tank 3.It is equipped with valve before and after described dosing pump 2, after preparing gold extractant in described drug slot 1, can
Valve before and after unlatching, utilizes described dosing pump 2 that gold extractant pumps into described reactive tank 3.
Concrete, described solid-liquid separation system is connected to described reactive tank 3 and described micro-nano air Bubble generating apparatus 6, uses
In the mixed liquor extracted in described reactive tank 3, and it is divided into two-way to export after the mixed liquor of extraction is carried out solid-liquid separation, Qi Zhongyi
Road is breeze concentrated solution, output to described reactive tank 3, and another road is the clear liquor comprising less solid, output to described micro-nano
Rice air Bubble generating apparatus 6.
As example, described solid-liquid separation system includes centrifugal pump 4 and ceramic membrane separation system 5.Described ceramic membrane separation
System 5 includes inlet, breeze concentrated solution outlet and pure water inlet；The outlet phase of described centrifugal pump 4 one end and described reactive tank 3
Even, the other end is connected to the inlet of described ceramic membrane separation system 5；The breeze concentrated solution outlet of described ceramic membrane separation system
Being connected to described reactive tank 3, pure water inlet is connected to described micro-nano air Bubble generating apparatus 6.Wherein, obtain through solid-liquid separation
The clear liquor comprising less solid by the output of described pure water inlet to described micro-nano generator 6.
Wherein, the centrifugal force that centrifugal pump (centrifugal pump) produces when referring to rotate by impeller is to carry liquid
Pump.In the present embodiment, before and after described centrifugal pump, it is equipped with valve.Set between described breeze concentrated solution outlet and described reactive tank 3
There is valve, between described pure water inlet and described micro-nano bubble generator 6, be provided with valve.
Ceramic membrane separation technique is the fluid separation process of a kind of " cross flow filter " form: material liquid is high velocity stream in membrane tube
Dynamic, under pressure-driven, the clarified permeation liquid containing small molecule component outwards passes through film, containing macromolecular components along direction normal thereto
Muddy concentrated solution be rejected by so that fluid reach separate, concentrate, the purpose of purification.
Ceramic membrane is by porosity 30%～50%, aperture 50nm～the ceramic monolith of 15 μm, use sol-gel process or
The asymmetric compound film that other technique is made.The structure of the ceramic membrane for separating is usually sandwich style: supporting layer
(also known as carrier layer), transition zone (also known as intermediate layer), film layer (also known as stratum disjunctum).Wherein the aperture of supporting layer is generally 1～20 μ
M, porosity is 30%～65%, and its effect is to increase the mechanical strength of film；The aperture of the aperture ratio supporting layer in intermediate layer is little, its
Effect is to prevent in film layer preparation process that granule is to the infiltration of porous support layer, and thickness is about 20～60 μm, and porosity is 30%
～40%；Film layer has separation function, and aperture is from 0.8nm～1 μm, and thickness is about 3～10 μm, porosity be 40%～
55%.The pore-size distribution of whole film is gradually reduced to film layer by supporting layer, forms asymmetric structure distribution.Porous ceramic film has
There are the advantages such as excellent high temperature resistant, solvent resistant, acid-proof alkaline and mechanical strength height, regenerating easily.
As example, the ceramic membrane materials that described ceramic membrane separation system 5 uses is aluminium oxide or zirconium oxide, and aperture is
0.1-1 μm, preferably 0.1-0.5 μm.Herein, the aperture of described ceramic membrane refers to the aperture of stratum disjunctum.
In another embodiment, described solid-liquid separation system may be used without cyclone form.The ultimate principle of cyclone is
Two-phase or multiphase mixture such as having the liquid-liquid of certain density contrast, liquid-solid, liquid-gas is carried out under the influence of centrifugal force point
From.Mixed liquor is tangentially entered cyclone with certain pressure, in cylindrical cavity, produces high speed rotating flow field.Mixture Midst density
Big component axially simultaneously moves downward under the effect of eddy flow field, moves radially outwards, and arrives cone segments along wall
Move downward, and discharged by underflow opening, material is thus formed outer swirling flow field；The component that density is little is transported to central axial direction
Dynamic, and form an inside vortex moved upward in axis centre, then discharged by overfall, thus reached two-phase laminated flow
Purpose.
Concrete, described micro-nano air Bubble generating apparatus 6 is connected to described solid-liquid separation system, described reactive tank 3 and institute
State gold adsorption system 7, for being mixed into air in the clear liquor from described solid-liquid separation system and producing micro-nano bubble, and
The clear liquor including micro-nano bubble is delivered to described reactive tank 3 or described gold adsorption system 7.Wherein, the oxygen in air
Gas is as oxidant.
Micro-nano bubble refer to when bubble occurs produce diameter between ten microns (μm) and tens nanometer (nm) (such as
10nm-10 μm) micro-bubble.This bubble has extra specific surface area, and the rate of climb is slow, and therefore its solvability increases
Add.The solvability of micro-nano bubble increases by 200,000 times than general air.Micro-nano bubble ruptures moment, owing to gas-liquid interface disappears
Acute variation, the high concentration ion that interface is gathered by the chemical energy abrupt release of savings out, now can excite generation big
The hydroxyl radical free radical of amount, and hydroxyl radical free radical has strong oxidizing property, is greatly improved the leaching rate of breeze.And due to its bubble
Minimum, considerably increase the mass-transfer efficiency of reaction.
As example, described micro-nano bubble generator 6 uses gas-liquid mixing pump, gas-liquid mixed than for 1:10-1:50,
It is preferably 1:10-1:20.Gas-liquid mixed pump intake can utilize suction function to suck gas, so without using air pressure
Contracting machine and vacuum pump.The impeller of pump of high speed rotating is by liquid and gas mix and blend, so without agitator and blender.
Owing to the pressurization in pump mixes, gas fully dissolves with liquid, and dissolved efficiency is up to 80～100%.So without pressurized bulk
The reaction tower of dissolving or costliness can produce high dissolution liquid.One gas-liquid mixing pump can carry out gas-liquid attraction, mixing, molten
Solve and directly deliver to high dissolution liquid use point.Therefore, use gas-liquid mixing pump can improve molten gas-liquid and produce efficiency, simplification
Device for making, save space, save operating cost and maintenance cost.
In another embodiment, described micro-nano bubble generator 6 may be used without pressure air-dissolving device, and liquid is used by it
Water pump is pressurized to 3-4kg/cm2And send into dissolving, make air be substantially soluble in liquid in tank, then through releasing in flotation tank
Putting device and reduce to suddenly normal pressure, the supersaturated air being at this moment dissolved in liquid forms micro-nano bubble.
Concrete, described gold adsorption system 7 is connected to described micro-nano air Bubble generating apparatus 6 and described reactive tank 3, is used for
Adsorbing from the gold ion in the clear liquor of described micro-nano air Bubble generating apparatus 6, the clear liquor after simultaneously inhaling gold is transmitted back to
Described reactive tank 3, it is achieved leaching limit, limit is adsorbed, improves production efficiency.
As example, described gold adsorption system 7 uses the polyacrylonitrile nanofiber film of amidoxim (to be called for short modified PAN
Film) ADSORPTION OF GOLD ion.The adsorption capacity of modified PAN film is up to 120mg/g, far above the adsorption capacity of existing process activity charcoal.
Certainly, in other embodiments, it is possible to select to use activated carbon adsorption gold ion.
Patent CN105080509A discloses the preparation method and application of a kind of nano fibrous membrane absorbent module, this nanometer
Fibrous membrane by electrostatic spinning at PET nonwoven surface composite polypropylene nitrile (PAN) nano fibrous membrane, then by this fibrous membrane hands
Work or machinery roll into wound module, finally by membrane module amidoxim.This patent have employed preparation in above patent just
Modified PAN membrane module carries out the absorption of gold ion in leachate.
As example, described gold adsorption system 7 includes that adsorption tank, described adsorption tank include and described micro-nano bubble generation dress
The charging aperture putting 6 connections and the discharging opening being connected with described reactive tank 3；The polyacrylonitrile nanofiber film of described amidoxim is put
It is placed in described adsorption tank.The polyacrylonitrile nanofiber of amidoxim in leachate enters described adsorption tank and described in submergence
Film, can realize the absorption of gold ion.Wherein, the polyacrylonitrile nanofiber film of the amidoxime being placed in described adsorption tank can
Think folded form or rolled membrane module form.
In another embodiment, described gold adsorption system 7 also can directly use described rolled membrane module, described rolled film group
Part lower end is provided with and connects 6 charging apertures connect with described micro-nano bubble generator, and upper end is provided with the discharging being connected with described reactive tank 3
Mouthful.Leachate can be entered in rolled membrane module by described charging aperture, then returns described reactive tank 3 via described discharging opening.
The gold extraction element of the present invention use micro-nano bubble as oxidant source, use ceramic membrane separation system or
Cyclone carries out solid-liquid separation, uses modified PAN film to carry out gold ion absorption, it is possible to achieve leaching limit, limit is adsorbed, and improves and produces
Efficiency, and it is greatly improved the leaching rate of breeze.
Embodiment 4
Refer to Fig. 2, be shown as the work during gold extraction element in the process for extracting gold employing embodiment 3 of the present invention
Process flow figure, comprises the steps:
Step S1 is first carried out: in described reactive tank, add the powder in gold mine, and carried by gold by described medicine system
Take agent and add described reactive tank, make described breeze reach preset concentration.
Concrete, described can be any powder in gold mine containing gold mine powder, can obtain by gold containing ore is beaten powder.Described ore deposit
The mean diameter of powder is preferably 0.1-500 μm.Described gold extractant can use existing any gold extractant.The present embodiment
In, described gold extractant preferably employs without cyanogen extractant, to reduce the pollution to environment.
As example, described extractant without cyanogen comprises the aminoacid that mass fraction is 0.5%-2%, and mass fraction is
The alkali of 0.2%-2%, solvent is water.Wherein, described aminoacid includes glycine, alanine, aspartic acid, phenylalanine, bright
One or more in propylhomoserin, histidine.Described alkali includes one or more in caustic soda, quick lime, Calx.
In one embodiment, described extractant without cyanogen preferably comprises the aminoacid that mass fraction is 0.5%-1.5%,
PH value is 9-13.
In another embodiment, described extractant without cyanogen preferably comprises the aminoacid that mass fraction is 0.6%-1%, pH value
For 10-12.
As example, after adding described gold extractant, the mass fraction of breeze described in described reactive tank is 1-50%,
The present embodiment is preferably 1-30%.
Then perform step S2: close described medicine system, open described solid-liquid separation system and described micro-nano bubble produces
Generating apparatus, makes described reactive tank, solid-liquid separation system and micro-nano bubble generator form closed circuit circulatory system, carries out the leaching of gold
Go out.
Concrete, the mixed liquor in reactive tank is pumped to described solid-liquid separation system, and breeze concentrated solution returns reactive tank and enters
Row circulation, clear liquor is again introduced into reactive tank after entering described micro-nano air Bubble generating apparatus and is circulated.
This step can maintain Preset Time, such as 8-72 hour so that the gold in breeze fully leaches.In this process,
In described reactive tank, the temperature of mixed liquor is 25-80 DEG C, and preferably 40-70 DEG C, PH maintains 9-13, preferably 10-12.
As example, gas-liquid mixed ratio when described micro-nano air Bubble generating apparatus produces micro-nano bubble is for 1:10-1:
50, preferably 1:10-1:30.
Further, ozone can be added as co-oxidants by the air inlet pipe of described micro-nano air Bubble generating apparatus, or
In described reactive tank, addition hydrogen peroxide is as co-oxidants, to improve reaction rate.The concentration of oxidant is preferably at 1.1%-
1%.
Then perform step S3: open described gold adsorption system, carry out leaching and the absorption of gold of gold simultaneously.
Concrete, from the absorption of the clear liquor entrance described gold adsorption system realization gold of described micro-nano bubble, and from
Described gold adsorption system outlet returns described reactive tank and is circulated, thus realizes the absorption of leaching limit, limit.In this process, described
In reactive tank, the temperature of mixed liquor is 25-80 DEG C, and preferably 40-70 DEG C, PH maintains 9-13, preferably 10-12.
In the present embodiment, can select to close described micro-nano air Bubble generating apparatus and lead to the valve of described reactive tank, make
The clear liquor including micro-nano bubble is only delivered to described gold adsorption system.In another embodiment, it is also possible to keep this valve
Door is in opening, makes the clear liquor including micro-nano bubble be delivered to described reactive tank simultaneously and described gold absorption is
System.
The follow-up gold ion using gold adsorption system described in aminoacid desorbing to adsorb.Described aminoacid include glycine,
One or more in alanine, aspartic acid, phenylalanine, leucine, histidine.
The process for extracting gold of the present invention uses aminoacid avirulent to environment to propose gold agent, and environment-protecting asepsis, waste water is through letter
Single process can be discharged.And can adsorb on leaching limit, limit, improve production efficiency.Refractory mineral is the most preprocessed also can reach the highest
Leaching rate.
Embodiment 5
Containing sulfur gold ore, it is mainly composed of quartz 65%, kaolinite 8%, pyrophyllite 20%, pyrite 8%, economy-combat powder
After, particle diameter is less than 74 μm, fills appropriate breeze in reactive tank.In dosing tank, configuration is without cyanogen extractant, and glycine concentration is
0.75%, pH sodium hydroxide regulation to 11-12, squeezes into reactive tank by dosing pump, and control breeze concentration is 5%, and closedown adds
Teat pipette, opens ceramic membrane separation system, gas-liquid mixing pump, it is ensured that liquid-gas ratio 10:1, and pressure maintains 0.3MPa.After question response 8h,
Open valve before and after modified PAN film adsorption system, start the absorption of leaching limit, limit.After 24h, obtain the leaching rate of breeze more than 90%.
The gold of PAN film absorption can use glycine desorbing.
Embodiment 6
Containing sulfur gold ore, it is mainly composed of quartz 65%, kaolinite 8%, pyrophyllite 20%, pyrite 8%, economy-combat powder
After, particle diameter is less than 74 μm, fills appropriate breeze in reactive tank.In dosing tank, configuration is without cyanogen extractant, and glycine concentration is
0.75%, pH sodium hydroxide regulation to 11-12, squeezes into reactive tank by dosing pump, and control breeze concentration is 30%, and closedown adds
Teat pipette, opens ceramic membrane separation system, gas-liquid mixing pump, it is ensured that liquid-gas ratio 10:1, and pressure maintains 0.3MPa.Pass through gas-liquid mixed
The air inlet pipe addition ozone of pump, as co-oxidants, after addition is 0.5% question response 8h, opens modified PAN film adsorption system
Valve front and back, starts the absorption of leaching limit, limit.After 48h, obtain the leaching rate of breeze more than 90%.The gold of PAN film absorption can be with sweet
Propylhomoserin desorbing.
Embodiment 7
Arsenic-containing gold ore, its be mainly composed of quartz 85%, pyrite 5%, mispickel 10%, after economy-combat powder, particle diameter be less than 74 μ
M, fills appropriate breeze in reactive tank.In dosing tank, configuration is without cyanogen extractant, and glycine concentration is 1%, pH sodium hydroxide
Regulating to 11-12, squeeze into reactive tank by dosing pump, control breeze concentration 10%, is closed dosing pump, is opened ceramic membrane separation
System, gas-liquid mixing pump, it is ensured that liquid-gas ratio 10:1, pressure maintains 0.3MPa.Ozone is added by the air inlet pipe of gas-liquid mixing pump
As co-oxidants, after addition is 0.5% question response 8h, opens valve before and after modified PAN film adsorption system, start leaching limit, limit
Absorption.After 24h, obtain the leaching rate of breeze more than 85%.The gold of PAN film absorption can use glycine desorbing.
These are only example, in other embodiments, it is yellow that the extractant without cyanogen of the present invention can also be applied to other type
In gold extraction element, should too not limit the scope of the invention.
In sum, the extractant without cyanogen of the present invention and process for extracting gold, have the advantages that
(1) present invention use aminoacid avirulent to environment carry gold agent carry out gold leaching, reusable edible, environmental protection without
Poison, extraction time is short, leaching rate is high, waste water can discharge through simple process.
(2) extractant without cyanogen of the present invention is not only to the easy leaching rate the highest (more than 90%, can reach 95%) soaking gold mine,
For traditional Refractory Au-ores, the most pretreated Ore containing pyrite mispickel, leaching rate is the highest (to be more than
85%), and being less than 30% without the leaching rate of such Ore tradition cyanidation technology of pretreatment, therefore the present invention can carry significantly
The leaching rate of high Refractory Au-ores.
(3) process for extracting gold of the present invention uses micro-nano bubble to carry out gold extraction as oxidant source, can swash
Send out and produce substantial amounts of hydroxyl radical free radical, and hydroxyl radical free radical has strong oxidizing property, is greatly improved the leaching rate of breeze.And by
Minimum in its bubble, considerably increase the mass-transfer efficiency of reaction.
(4) process for extracting gold of the present invention also uses modified PAN adsorbed film ADSORPTION OF GOLD ion, and adsorption capacity is up to
120mg/g, far above the adsorption capacity of existing process activity charcoal.
So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any ripe
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage knowing this technology.Cause
This, have usually intellectual such as complete with institute under technological thought without departing from disclosed spirit in art
All equivalences become are modified or change, and must be contained by the claim of the present invention.
Claims (20)
1., without a cyanogen extractant, it is used for extracting gold from, it is characterised in that: described extractant without cyanogen comprises mass fraction and is
The aminoacid of 0.5%-2%, mass fraction is the alkali of 0.2%-2%, and solvent is water.
Extractant without cyanogen the most according to claim 1, it is characterised in that: described extractant without cyanogen comprises mass fraction and is
The aminoacid of 0.5%-1.5%, pH value is 9-13.
Extractant without cyanogen the most according to claim 2, it is characterised in that: described extractant without cyanogen comprises mass fraction and is
The aminoacid of 0.6%-1%, pH value is 10-12.
Extractant without cyanogen the most according to claim 1, it is characterised in that: described aminoacid includes glycine, alanine, sky
One or more in winter propylhomoserin, phenylalanine, leucine, histidine.
Extractant without cyanogen the most according to claim 1, it is characterised in that: described alkali includes caustic soda, quick lime, Calx
In one or more.
6. a process for extracting gold, it is characterised in that described process for extracting gold is: gold mine is utilized such as claim 1-5
Extractant without cyanogen described in any one carries out the leaching of gold.
Process for extracting gold the most according to claim 6, it is characterised in that: described gold mine is beaten powder by Gold Ore and is obtained
Breeze.
Process for extracting gold the most according to claim 7, it is characterised in that: the mean diameter of described breeze is 0.1-500 μ
m。
Process for extracting gold the most according to claim 7, it is characterised in that: described breeze is mixed with described extractant without cyanogen
Conjunction obtains mixed liquor and carries out the leaching of gold, and the mass fraction of described breeze is 1-50%.
Process for extracting gold the most according to claim 9, it is characterised in that: the mass fraction of described breeze is 1-30%.
11. process for extracting gold according to claim 9, it is characterised in that: the temperature of described mixed liquor is 25-80 DEG C,
PH maintains 10-12, and the response time is 8-72h.
12. process for extracting gold according to claim 11, it is characterised in that: the temperature of described mixed liquor is 40-70 DEG C,
Response time is 8-24h.
13. process for extracting gold according to claim 9, it is characterised in that: by described breeze, described extractant without cyanogen and
Oxidant is mixed to get mixed liquor and carries out the leaching of gold.
14. process for extracting gold according to claim 13, it is characterised in that: described oxidant includes air, ozone, double
One or more in oxygen water.
15. process for extracting gold according to claim 13, it is characterised in that: will be made by micro-nano bubble generator
Air, ozone or the gaseous mixture of the two for oxidant are mixed into described mixed liquor with micro-nano bubble form.
16. process for extracting gold according to claim 15, it is characterised in that: described micro-nano bubble a diameter of
10nm-10μm。
17. process for extracting gold according to claim 15, it is characterised in that: described micro-nano bubble generator is logical
Cross gas-liquid mixing pump or pressure air-dissolving mode produces micro-nano bubble.
18. process for extracting gold according to claim 6, it is characterised in that: use activated carbon or poly-the third of amidoxim
Alkene nitrile nanofibre film ADSORPTION OF GOLD ion.
19. process for extracting gold according to claim 18, it is characterised in that: use activated carbon described in aminoacid desorbing or
The gold ion of the polyacrylonitrile nanofiber film absorption of amidoxim.
20. process for extracting gold according to claim 19, it is characterised in that: described aminoacid includes glycine, the third ammonia
One or more in acid, aspartic acid, phenylalanine, leucine, histidine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610819616.0A CN106191460B (en) | 2016-09-13 | 2016-09-13 | A kind of no cyanogen extractant and process for extracting gold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610819616.0A CN106191460B (en) | 2016-09-13 | 2016-09-13 | A kind of no cyanogen extractant and process for extracting gold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106191460A true CN106191460A (en) | 2016-12-07 |
| CN106191460B CN106191460B (en) | 2018-12-04 |
Family
ID=58067666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610819616.0A Active CN106191460B (en) | 2016-09-13 | 2016-09-13 | A kind of no cyanogen extractant and process for extracting gold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106191460B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108085497A (en) * | 2017-12-01 | 2018-05-29 | 上海铀金信息科技有限公司 | The extracting method of gold element in a kind of electronic waste |
| CN112961991A (en) * | 2021-02-05 | 2021-06-15 | 江西理工大学 | Copper-catalyzed glycine-thiosulfate composite gold leaching process |
| CN113025825A (en) * | 2021-03-05 | 2021-06-25 | 华东理工大学 | Method for leaching valuable metals from batteries using nanobubbles |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2052518C1 (en) * | 1992-04-09 | 1996-01-20 | Совместное советско-западно-германское предприятие "Инбио" | Method for extraction of noble metals from low-grade ores |
| CN104109762A (en) * | 2014-07-09 | 2014-10-22 | 大冶市金印化工有限公司 | Environment-friendly nontoxic gold extractant, and preparation method and gold extraction method thereof |
| CN105734281A (en) * | 2014-12-09 | 2016-07-06 | 河南绿金矿业科技有限公司 | Environment-friendly compound precious metal leaching agent and preparation method thereof |
-
2016
- 2016-09-13 CN CN201610819616.0A patent/CN106191460B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2052518C1 (en) * | 1992-04-09 | 1996-01-20 | Совместное советско-западно-германское предприятие "Инбио" | Method for extraction of noble metals from low-grade ores |
| CN104109762A (en) * | 2014-07-09 | 2014-10-22 | 大冶市金印化工有限公司 | Environment-friendly nontoxic gold extractant, and preparation method and gold extraction method thereof |
| CN105734281A (en) * | 2014-12-09 | 2016-07-06 | 河南绿金矿业科技有限公司 | Environment-friendly compound precious metal leaching agent and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108085497A (en) * | 2017-12-01 | 2018-05-29 | 上海铀金信息科技有限公司 | The extracting method of gold element in a kind of electronic waste |
| CN112961991A (en) * | 2021-02-05 | 2021-06-15 | 江西理工大学 | Copper-catalyzed glycine-thiosulfate composite gold leaching process |
| CN112961991B (en) * | 2021-02-05 | 2023-01-03 | 江西理工大学 | Copper-catalyzed glycine-thiosulfate composite gold leaching process |
| CN113025825A (en) * | 2021-03-05 | 2021-06-25 | 华东理工大学 | Method for leaching valuable metals from batteries using nanobubbles |
| CN113025825B (en) * | 2021-03-05 | 2022-03-01 | 华东理工大学 | Method for leaching valuable metals from batteries using nanobubbles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106191460B (en) | 2018-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106191459B (en) | A kind of cleaning gold extraction element and method | |
| CN106191460B (en) | A kind of no cyanogen extractant and process for extracting gold | |
| CN206015040U (en) | A kind of clean gold extraction element | |
| CN105637104A (en) | Fluid treatment apparatus and process | |
| CN110177763A (en) | Water treatment facilities and water treatment system | |
| CN103112971B (en) | Coagulation-floatation and co-coagulation solid-liquid separation device and solid-liquid separation method | |
| CN101353189A (en) | Single cyclone coagulation reactor and oil-contaminated water processing method | |
| CN108483747A (en) | The removal of nickel and recovery system and method in a kind of nickel-containing waste water | |
| CN105967413A (en) | Polished-wastewater integrated treatment device | |
| CN204746634U (en) | Centrifugal separator explosion -proof equipment is used in benomyl production | |
| CN109395534A (en) | It is a kind of for handling the method and apparatus of ethyl alcohol exhaust gas | |
| CN209210893U (en) | A kind of device extracting noble metal from dead catalyst | |
| CN215560548U (en) | Device for leaching mineral substances | |
| CN105000719B (en) | Synthetic cut stone processing wastewater treatment process and its eddy current type coagulation reactor | |
| CN208526295U (en) | A kind of tailing smelting three wastes desulphurization system | |
| CN208883955U (en) | A kind of Extraction of rare eart system of lamp rare-earth trichromatic fluorescent powder waste water | |
| CN109760231A (en) | A kind of environment-friendly type waste plastics film regeneration treatment equipment and technique | |
| CN109987726A (en) | A kind of breaking micro-nano bubble method for generation of multistage rotary-cut and device | |
| CN214990647U (en) | Heavy metal separation structure of heavy metal pollution industrial waste water | |
| CN109207732A (en) | A kind of Extraction of rare eart system and method for lamp rare-earth trichromatic fluorescent powder waste water | |
| CN209242801U (en) | A kind of novel heavy metal filter | |
| CN212356756U (en) | Pretreatment equipment for oil stain and SS in polishing solution wastewater | |
| CN107226562A (en) | A kind of chemical industry purifying sewage quickly device | |
| CN107569998A (en) | A kind of mine tailing smelts three wastes desulphurization system and method | |
| CN112978841A (en) | Modular multistage-region mineralizing, metallurgy pressurizing and mineralizing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190701 Address after: Room 207, 668 Xinqiao Highway, Songjiang District, Shanghai, 201600 Patentee after: Hejing (Shanghai) New Energy Technology Co., Ltd. Address before: No. 99, Pudong New Area Road, Shanghai, Shanghai Patentee before: Shanghai Advanced Research Institute, Chinese Academy of Sciences |